1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
"""
***************************************************************************
merge.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = "Victor Olaya"
__date__ = "August 2012"
__copyright__ = "(C) 2012, Victor Olaya"
import os
from qgis.PyQt.QtGui import QIcon
from qgis.core import (
QgsRasterFileWriter,
QgsProcessing,
QgsProcessingException,
QgsProcessingParameterDefinition,
QgsProcessingParameterMultipleLayers,
QgsProcessingParameterEnum,
QgsProcessingParameterString,
QgsProcessingParameterBoolean,
QgsProcessingParameterNumber,
QgsProcessingParameterRasterDestination,
)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools.system import isWindows
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
class merge(GdalAlgorithm):
INPUT = "INPUT"
PCT = "PCT"
SEPARATE = "SEPARATE"
OPTIONS = "OPTIONS"
EXTRA = "EXTRA"
DATA_TYPE = "DATA_TYPE"
NODATA_INPUT = "NODATA_INPUT"
NODATA_OUTPUT = "NODATA_OUTPUT"
OUTPUT = "OUTPUT"
TYPES = [
"Byte",
"Int16",
"UInt16",
"UInt32",
"Int32",
"Float32",
"Float64",
"CInt16",
"CInt32",
"CFloat32",
"CFloat64",
"Int8",
]
def __init__(self):
super().__init__()
def initAlgorithm(self, config=None):
self.addParameter(
QgsProcessingParameterMultipleLayers(
self.INPUT, self.tr("Input layers"), QgsProcessing.SourceType.TypeRaster
)
)
self.addParameter(
QgsProcessingParameterBoolean(
self.PCT,
self.tr("Grab pseudocolor table from first layer"),
defaultValue=False,
)
)
self.addParameter(
QgsProcessingParameterBoolean(
self.SEPARATE,
self.tr("Place each input file into a separate band"),
defaultValue=False,
)
)
nodata_param = QgsProcessingParameterNumber(
self.NODATA_INPUT,
self.tr("Input pixel value to treat as NoData"),
type=QgsProcessingParameterNumber.Type.Double,
defaultValue=None,
optional=True,
)
nodata_param.setFlags(
nodata_param.flags() | QgsProcessingParameterDefinition.Flag.FlagAdvanced
)
self.addParameter(nodata_param)
nodata_out_param = QgsProcessingParameterNumber(
self.NODATA_OUTPUT,
self.tr("Assign specified NoData value to output"),
type=QgsProcessingParameterNumber.Type.Double,
defaultValue=None,
optional=True,
)
nodata_out_param.setFlags(
nodata_out_param.flags()
| QgsProcessingParameterDefinition.Flag.FlagAdvanced
)
self.addParameter(nodata_out_param)
options_param = QgsProcessingParameterString(
self.OPTIONS,
self.tr("Additional creation options"),
defaultValue="",
optional=True,
)
options_param.setFlags(
options_param.flags() | QgsProcessingParameterDefinition.Flag.FlagAdvanced
)
options_param.setMetadata({"widget_wrapper": {"widget_type": "rasteroptions"}})
self.addParameter(options_param)
extra_param = QgsProcessingParameterString(
self.EXTRA,
self.tr("Additional command-line parameters"),
defaultValue=None,
optional=True,
)
extra_param.setFlags(
extra_param.flags() | QgsProcessingParameterDefinition.Flag.FlagAdvanced
)
self.addParameter(extra_param)
self.addParameter(
QgsProcessingParameterEnum(
self.DATA_TYPE,
self.tr("Output data type"),
self.TYPES,
allowMultiple=False,
defaultValue=5,
)
)
self.addParameter(
QgsProcessingParameterRasterDestination(self.OUTPUT, self.tr("Merged"))
)
def name(self):
return "merge"
def displayName(self):
return self.tr("Merge")
def group(self):
return self.tr("Raster miscellaneous")
def groupId(self):
return "rastermiscellaneous"
def icon(self):
return QIcon(os.path.join(pluginPath, "images", "gdaltools", "merge.png"))
def commandName(self):
return "gdal_merge"
def getConsoleCommands(self, parameters, context, feedback, executing=True):
out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
self.setOutputValue(self.OUTPUT, out)
arguments = []
if self.parameterAsBoolean(parameters, self.PCT, context):
arguments.append("-pct")
if self.parameterAsBoolean(parameters, self.SEPARATE, context):
arguments.append("-separate")
if (
self.NODATA_INPUT in parameters
and parameters[self.NODATA_INPUT] is not None
):
nodata_input = self.parameterAsDouble(
parameters, self.NODATA_INPUT, context
)
arguments.append("-n")
arguments.append(str(nodata_input))
if (
self.NODATA_OUTPUT in parameters
and parameters[self.NODATA_OUTPUT] is not None
):
nodata_output = self.parameterAsDouble(
parameters, self.NODATA_OUTPUT, context
)
arguments.append("-a_nodata")
arguments.append(str(nodata_output))
data_type = self.parameterAsEnum(parameters, self.DATA_TYPE, context)
if self.TYPES[data_type] == "Int8" and GdalUtils.version() < 3070000:
raise QgsProcessingException(
self.tr("Int8 data type requires GDAL version 3.7 or later")
)
arguments.append("-ot " + self.TYPES[data_type])
output_format = QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1])
if not output_format:
raise QgsProcessingException(self.tr("Output format is invalid"))
arguments.append("-of")
arguments.append(output_format)
options = self.parameterAsString(parameters, self.OPTIONS, context)
if options:
arguments.extend(GdalUtils.parseCreationOptions(options))
if self.EXTRA in parameters and parameters[self.EXTRA] not in (None, ""):
extra = self.parameterAsString(parameters, self.EXTRA, context)
arguments.append(extra)
arguments.append("-o")
arguments.append(out)
# Always write input files to a text file in case there are many of them and the
# length of the command will be longer then allowed in command prompt
list_file = GdalUtils.writeLayerParameterToTextFile(
filename="mergeInputFiles.txt",
alg=self,
parameters=parameters,
parameter_name=self.INPUT,
context=context,
quote=True,
executing=executing,
)
arguments.append("--optfile")
arguments.append(list_file)
return [
self.commandName() + (".bat" if isWindows() else ".py"),
GdalUtils.escapeAndJoin(arguments),
]
|
